The percentage profit on an MP3 player purchased for $320 and later sold for $350 is

The profit percentage in MP3 player is 9.37 %.

Step-by-step explanation:

Cost price of MP3 player is $320

Selling price of MP3 player is $350.

Here, selling price is more than cost price. It means there is profit in MP3 player.

Profit = SP - CP

Profit = 350 - 320

Profit = $30

Profit percentage is given by :

The profit percentage in MP3 player is 9.37 %.

10

step-by-step explanation:

7+3=10

the inequality is:

250c+180g≥950

step-by-step explanation:

let c denotes the number of days in a week   miyoko worked as a cryptographer.

and g denotes the number of days in a week she works as a geologist.

now we are given that she earns $250 for every day she works as a cryptographer,and earns $180 for every day she works as a geologist.

now miyoko's goal is to earn more than $950 this week.

hence, the inequality could be represented as:

250c+180g≥950